JPH11336728A - Driving bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain cost reduction by simplifying fitting of a bolt to a building member. SOLUTION: This driving bolt 1 consists of a leg part 7 and a head part 6. A large-diameter part 2, whose diameter is slightly larger than a driving hole 5 formed out of a member 10 and which engages with the hole edge 15 of the driving hole 5 at the time of driving it, is formed at the leg part 7. Between the large-diameter part 2 and the head part 6, a locking protrusion 3 which bits into the driving hole 5 is protrudingly-formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving bolt used for driving a building member such as an iron plate or an angle.

[0002]

2. Description of the Related Art FIG. 14 shows an example of mounting bolts (20) which are used by being planted on an iron plate or an angle of a building member (23). For example, as shown in FIG. 14, a bolt (20) implanted in a building member (23) such as an iron plate or an angle inserts a leg (27) into a through hole (28), and (21) is fixed to the member (23) by welding, and then the leg (27) is inserted into the through hole (29) drilled in the other member (24), and then is passed through the washer (25). Screwed with a nut (26). (22) indicates a welded portion.

[0003]

However, in recent years, there has been an extremely strong demand for cost reduction in the construction field, and welding bolts to building members has been very troublesome, and there has been a major problem in terms of cost. . Therefore, the present invention simplifies the mounting of bolts on building members,
The goal is to reduce costs.

[0004]

The driving bolt (1) according to claim 1 is composed of a leg (7) and a head (6), and a driving hole (1) formed in a member (10). 5) The diameter is slightly larger than the diameter, and the hole edge (15) of the driving hole (5) at the time of driving
A large diameter portion (2) that engages with the hole is formed on the leg (7), and between the large diameter portion (2) and the head (6), a detent protrusion (5) that bites into the driving hole (5). 3) is abutted. "

According to this, when the driving bolt (1) is driven into the driving hole (5), the large-diameter portion (2) forms the edge of the driving hole (5).
(15) and fixed to the member (10),
(3) bites into the inner peripheral surface of the driving hole (5) and is fixed, and as shown in FIG. 1, serves as a rotation stop when another member (11) is hooked on the driving bolt (1) with a nut. Therefore, the driving bolt (1) according to the present invention is simply a driving hole (5) of the member (10).
Simply insert the bolt (1) into the member (10)
, Which can greatly reduce the labor and cost for installation.

A second aspect of the present invention relates to an improvement of the driving bolt (1) according to the first aspect, wherein the large-diameter portion (2) extends from the top portion (14) to the leg portion.
It is composed of a tip-side inclined surface (8) heading toward (7) and a head-side inclined surface (9), and a hole edge (15) of a member (10) is formed on the head-side inclined surface (9).
Are engaged ".

According to this, the member (1) is attached to the head-side inclined surface (9).
Since the hole edge (15) of (0) is engaged, even if a force in the pull-out direction is applied to the driving bolt (1), as long as the head-side inclined surface (9) does not come off from the driving hole (5), the driving bolt (15) is engaged. There is no possibility that 1) falls off, and reliable engagement is guaranteed.

According to a third aspect of the present invention, in the driving bolt (1) according to the first or second aspect, "the rotation preventing projection (3) is formed by the leg (6).
And a contact protruding portion (4) that is in contact with the driving hole (5) is formed on the opposite side of the rotation preventing protrusion (3). "

According to this, when the driving bolt (1) is driven into the driving hole (5), the rotation preventing projection (3) and the contact projection are formed.
(4) comes into contact with or bites into the inner peripheral surface of the driving hole (5), so that the leg (6) of the driving bolt (1) can be fixed in alignment with the center of the driving hole (5).

According to a fourth aspect of the present invention, in the driving bolt (1) according to any one of the first to third aspects, the "rotation stop projection (3)" is provided.
Is provided on one side of the leg portion (7), and the large-diameter portion (2) is formed on the opposite side of the detent projection (3). "

According to this, the large-diameter portion (2) has the driving hole (5).
When passing through the inside, the leg portion (6) of the driving bolt (1) is brought closer to the side where the large diameter portion (2) is not formed, it can be driven with relatively small force, and furthermore, the rotation preventing projection ( When 3) comes into contact with the driving hole (5), the leg (6)
(2) side, finally the large diameter portion (2) engages with the hole edge (15) of the driving hole (5), and the detent projection (3)
The driving bolt (1) is cut into the inner peripheral surface of (5), and the driving bolt (1) is fixed to the driving hole (5).

According to a fifth aspect of the present invention, there is provided the driving bolt (1) according to any one of the first to fourth aspects, wherein the large-diameter portion (2) is formed with irregularities (16).

According to this, if the large-diameter portion (2) is formed with the unevenness (16), the large-diameter portion (2) is engaged with the hole edge (15) of the driving hole (5). As a result, the unevenness (16) bites into the hole edge (15), and also acts as a detent.

A sixth aspect of the present invention relates to a more detailed embodiment of the driving bolt (1) according to the first aspect, wherein the head-side inclined surface (9) has a leg portion.
(7), the hole edge (15) of the member (10) is engaged with the head-side inclined surface (9) ".

According to this, the head-side inclined surface (9) is connected to the leg (6).
When the leg (7) is driven into the driving hole (5), the head-side inclined surface (9) is securely engaged with the hole edge (15) of the member (10). Even if force is applied from the leg (7) side to the direction in which the driving bolt (1) comes out of the driving hole (5), the driving bolt (1) is engaged by the head side slope (9).
(1) does not fall off.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is an explanatory view of a use state of the first embodiment of the present invention, and FIG. 2 is a view when FIG. 1 is viewed from a leg (7) side. The driving bolt (1) is composed of a head (6) and a leg (7), and the large diameter portion (2) matches the thickness of the member (10).
(7) is formed.

As shown in FIG. 11, a first example of the shape of the large diameter portion (2) is formed by a tip side slope (8) and a head side slope (9) inclined with respect to the leg (7). Have been. The inclination angle is the tip side slope
It is more preferable to form (8) at a steeper angle than the head-side slope (7) because the engagement state after driving is ensured.

FIG. 12 shows a second embodiment in which the tip side slope (8) has a leg (7).
This is an example formed perpendicular to. In this case, the head-side inclined surface (9) is engaged with the back surface of the member (10) to exhibit a retaining effect.

FIG. 13 shows a third example in which the tip side slope (8) is formed to be slightly curved inward. By doing so, the state of engagement with the hole edge (15) is more preferable than in the case of FIG.

A thread is screwed into a portion of the leg (7) beyond the large diameter portion (2), and the leg (7) is located between the head (6) and the large diameter portion (2). ) Has one or more detent protrusions (3) on the side,
Is formed.

The shape of the rotation preventing projection (3) is such that the end on the side of the large diameter portion (2) is sharp and the top is also sharp, and has a substantially triangular cross section. By forming in this way,
The driving is facilitated, and the anti-rotation projection (3) is easily cut into the inner peripheral surface of the driving hole (5).

A driving hole (5) slightly smaller than the diameter of the large-diameter portion (2) is formed at an appropriate position of the member (10). This member
(10) is an architectural steel material such as an angle or a channel member, which is used by implanting a driving bolt (1) in an appropriate position of the member (10). The thickness of the member (10) is appropriately selected according to the bulging position of the large-diameter portion (2) as shown by a, b, and c.

In the case of the wall thickness a, it is the thinnest and the thickness is such that the hole edge (15) is engaged with the head side slope (9). In the case of (b), the thickness matches the top (14) of the large diameter portion (2), and in the case of the thickness (c), the thickness exceeds the top (14). In the case of wall thickness a, the hole edge (15) is securely engaged with the head side slope (9), but in the case of wall thickness b and c, the top (14) matches the hole edge (15). Or, it remains in the driving hole (5), and the engaging force is weaker than in the case of the thick wall.

Next, the driving state of the driving bolt (1) will be described. Driving hole (5) formed in member (10)
Then, the leg (7) is inserted through the hole, the head (6) is hit, and the large diameter portion (2) is pressed into the driving hole (5) and passed therethrough. At this time, the inner circumference of the top portion (14) and the driving hole (5) is slightly deformed so that the large-diameter portion (2) can pass through the driving hole (5).

When the top portion (14) that has passed through the driving hole (5) is thick, the head side slope (9) engages with the hole edge (15) and is securely fixed to the member (10). You. At the same time, the anti-rotation projection (3) bites into this inner circumference, preventing rotation of the driving bolt (1). In this way, the bolt is driven into the member (10).
After driving and fixing (1), the other member (11) will be attached to the driving bolt (1).
The leg (7) is inserted into the through hole (17) of (11), and the nut (13) is screwed to the leg (7) via the washer (12).

At this time, the nut is operated by the rotation preventing projection (3).
At the time of tightening (13), the driving bolt (1) does not rotate with respect to the member (10). In this way, other members (11)
To the main member (10).

FIG. 3 shows a second embodiment of the present invention.
The same parts as those in the embodiment are omitted for the sake of simplicity, and only different parts will be described. FIG. 3 shows an example in which a contact projection (4) is protruded from the base of the leg (7) on the opposite side of the detent projection (3) or at a position different from the detent projection (3). .

When the detent protrusions (3) are provided at one or two locations asymmetrically as shown in FIG. 1, when the detent protrusions (3) are driven into the driving holes (5), they are slightly driven. The center of the hole (5) may be slightly shifted from the center of the driving bolt (1). However, the center of the driving bolt (1) coincides with the center of the driving hole (5) of the member (10) due to the presence of the contact projection (4).

FIG. 5 shows a third embodiment of the present invention.
Is provided on a half-circumferential portion of the leg portion (7), and a detent projection (3) is provided on the opposite side of the large-diameter portion (2). This makes it easier for the large diameter portion (2) to pass through the driving hole (5), and after the driving, the large diameter portion
At the same time as (2) is engaged with the hole edge (15), the detent projection (3) bites into the inner peripheral surface of the driving hole (5), and the detent projection (3) and the large diameter part (2) cooperate. This makes it possible to secure a firm fixation of the driving bolt (1) to the member (10).

FIG. 7 shows a fourth embodiment of the present invention, in which at least the tip side slope (8) and the head side slope (9) of the large diameter portion (2) have irregularities (16).
This is an example in which is formed. In the case of FIG. 7, the large diameter part (2) and the head
An example is shown in which unevenness (16) is formed also with (6). By doing so, the unevenness (16) of the head side slope (9)
Bites into the hole edge (15), and has both the effect of engagement and the effect of preventing rotation.

FIG. 9 shows a fifth embodiment of the present invention, in which a stepped press-in step (18) is formed at the base of the leg (7) all around the leg (7). When the press-in step (18) is provided at the base of the leg (7), when the driving bolt (1) is driven into the driving hole (5), the press-in step (18) of the member (10) is driven into the driving hole (5). ) Is pressed inward to form an inner bulge (10a). Then, the anti-rotation protrusion (3) bites into the inner bulge portion (10a) more deeply, thereby exhibiting a higher anti-rotation effect. The outer peripheral shape of the press-fit step (18) may be a ring shape such as an elliptical shape or a hexagonal shape in addition to a circular ring shape. This portion cuts into the hole (10b) on the head side of the driving hole (5) and functions as a detent.

[0032]

The driving bolt according to the present invention has a large diameter portion and a rotation preventing projection, so that the driving bolt is securely fixed to the member simply by driving the driving bolt into the driving hole of the member. As a result, the conventional welding process can be eliminated, and the work of attaching bolts to members can be extremely simplified. In addition, since the head-side inclined surface of the large-diameter portion is engaged with the hole edge of the member at the large-diameter portion, it is possible to reliably prevent the driving bolt from falling off the member.

Further, by forming the contact projection on the opposite side of the rotation preventing projection, the center of the driving bolt and the center of the driving hole can be matched at the time of driving.

In the case where the rotation preventing projection is provided on one side of the leg portion and the large diameter portion is formed on the opposite side, the large diameter portion is provided on a half circumferential portion of the leg portion. Therefore, the driving becomes easier, and the driving bolt can be securely fixed to the member in cooperation with the rotation preventing projection provided on the other half circumference.

Further, if irregularities are formed on the large diameter portion,
It is needless to say that the anti-rotation projection may be provided without providing the anti-rotation projection. However, the unevenness will bite into the hole edge of the driving hole to exert the anti-rotation effect.

Furthermore, when the head-side slope of the large-diameter portion is formed perpendicular to the legs, the engagement of the head-side slope with the hole edge of the member is assured, and the more reliable removal is possible. Stop is secured.

[Brief description of the drawings]

FIG. 1 is a partially cutaway sectional view showing a mounting state of a first embodiment of a driving bolt according to the present invention.

FIG. 2 is a perspective view in the direction A of FIG. 1;

FIG. 3 is a partially cutaway sectional view of a second embodiment of the driving bolt of the present invention.

FIG. 4 is a perspective view in the B direction of FIG. 3;

FIG. 5 is a partially cutaway sectional view showing a fixed state of a driving bolt according to a third embodiment of the present invention.

FIG. 6 is a perspective view of a direction C in FIG. 5;

FIG. 7 is a partially cutaway sectional view showing a fixed state of a driving bolt according to a fourth embodiment of the present invention.

8 is a perspective view in the direction D in FIG. 7;

FIG. 9 is a partially cutaway sectional view of a fifth embodiment of the driving bolt of the present invention.

FIG. 10 is a perspective view of a first embodiment of the driving bolt according to the present invention.

FIG. 11 shows a first example of a large diameter portion of the driving bolt according to the present invention.
Partial enlarged front view of example

FIG. 12 shows a second example of the large diameter portion of the driving bolt according to the present invention.
Partial enlarged front view of example

FIG. 13 shows a third example of the large diameter portion of the driving bolt according to the present invention.
Partial enlarged front view of example

FIG. 14 is a sectional view of a conventional example in an attached state.

[Explanation of symbols]

 (1) Driving bolt (2) Large diameter part (3) Detent protrusion (4) Abutment protrusion (5) Driving hole (6) Head (7) Leg (8) Tip side slope (9) Head Side slope (10) Member (11) Member (12) Washer (13) Nut (14) Top (15) Hole edge

Claims (6)

[Claims] In a driving bolt composed of a leg and a head, a large-diameter portion having a diameter slightly larger than a driving hole formed in a member is formed in the leg. A driving bolt characterized in that a rotation preventing projection that projects into a driving hole is provided between the head and the head. 2. The large-diameter portion includes a tip-side inclined surface extending from the top to the leg portion and a head-side inclined surface. The hole edge of the member is engaged with the head-side inclined surface. Claim 1.
The driving bolt described in. 3. The rotation-stop projection is formed on one surface of the leg, and a contact projection is formed on the opposite side of the rotation-stop projection to abut the driving hole. 1
Or the driving bolt according to 2. 4. The rotation preventing projection according to claim 1, wherein the rotation preventing projection is provided on one side of the leg, and the large diameter portion is formed on the opposite side of the rotation preventing projection. The driving bolt described in. 5. The driving bolt according to claim 1, wherein the large-diameter portion has irregularities. 6. The driving bolt according to claim 1, wherein the head-side inclined surface is formed perpendicular to the legs, and the hole edge of the member is engaged with the head-side inclined surface. .